Sewing-machine



(N0 Modl.) 3 Sheets -She"et 3.

v J. SOHAAGK.

SEWING MACHINE.

No. 507,243. Patented Oct. 24, 1893.

UNITED STATES PATENT OFFICE.

JOHN SCHAAOK, OF WEST HOBOKEN, NEW JERSEY.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 507,243, dated October 24, 1893. Application filed June 28, 1893- Serial. No. 479,047- (No model.)

To all whom it may concern.-

Be it known that I, JOHN SOHAACK, of West Hoboken, Hudson county,New Jersey, have invented an Improved Sewing-Machine, of which the following is a specification.

This invention relates to a sewing machine .of peculiar construction for producing borrocating laterally under the work plate and which throws the chain thread across the path of the hook that interloops it with the needle thread.

In the accompanying drawings: Figure 1 is an elevation of my improved sewing machine; Fig. 2 a top view of its operating mechanism, with the work plate removed;

' Fig. 3 a cross section on line 00, 00, Fig. 2.

Figs. 4: and 5 are a section and elevation of the cam b Figs. 6 and 7 end and top views of the first position of the needle; Figs. 8 and 9 similar views of the second position; Figs. 10 and 11 similar views of the third position; Figs. 12 and 13 similar views of the fourth position; Fig. 14 an end View of the fifth position. Figs. 15 and 16 show the stitch formed by the machine in top and side View.

The letter A, represents the head of the sewing machine, made of suitable construction, and carrying the vertically reciprocating needle a, as usual. Upon the work shaft b, there is mounted an eccentric b, and a earn 17 The eccentric b, by means of ring 19 rocks a shaft'c, which by arm 0, reciprocates a slide (1, guided in grooved rails d. To the slide d, is secured a hook e, adapted to engage the loop of the needle thread and provided with a latch 6', similar to a knitting machine needle. The latch needle e, thus reciprocates in a plane parallel with the line g, to which there is attached a tubular thread guide 9, for the chain thread and a finger The thread guide g, will thus reciprocate from the left to the right of the machine, while the hook e, operates from the front to the rear of the machine. Hence the paths of hook and thread guide cross at right angles, beneath the work plate the thread guide being placed a trifle higher than the hook, to permit unobstructed co-action of the parts. To the block g, there is secured a forwardly projecting bent arm 9 that engages a finger h, pivotally secured to a fixed bar h. The finger h, is also influenced by a spring W, and operates in conjunction with a fixed finger it, also secured to the bar h, to constitute a spreader. The spreader h, 71 is placed above the finger 9 while the hook e, is placed below such finger. Thus all the parts work free and clear of each other. The

chain thread m passes from its spool m,

through a suitable tension device 41, and thence to the tubular thread guide g, by which it is thrown directly in front of the needle a.

The operation of the machineis as follows: The thread guide 9 moves to the right in front of the path of needle (1, (Figs. 6 and 7.) The needle descends and commences its ascent back of the thread guide to form a loop 19, while the previously formed loop p,of the needle thread 72., has been opened by the spreader (Figs. 8 and 9). At the same time the hook e moves backward, its latch being opened by loop p, to engage loop 19, the needle ascends (Figs. 10 and 11), the hook moves forward, (having its latch closed by loop p) the thread guide 9 moves to the left (Figs. 12 and 13) while the spreader closes. The loop 19, will thus be drawn around the chain thread 1%, and entirely clear of loop 19' (Fig. 14) which will be drawn taut by the next descent of the needle. The stitch made by the machine is shown in Figs. 15 and 16. It is of course, formed upon that side of the fabric B, which faces downward, 't'. a, which is laid upon the work table is. The needle thread at forms a series of loops p, p, projecting all toward one side and entirely disconnected at such side. The chain thread first embraces and then passes through the loop of the needle thread and formsaverybeautiful braid-like ornamentation. The feed dog 2. The combination in asewing machine, of r, and presser foot 3, are of customary or suita vertically reciprocating eye pointed needle able construction. with a cloth feeding device,a rock shaft and 15 What I claim is reciprocating shaft, a slide operated by the 5 1. The combination in a sewingmachine, of rock shaft, a hook secured to the slide and rea vertically reciprocating eye pointed needle ciprocating in a plane parallel to the line of with a cloth feeding device, a latch hook enfeed and with a thread guide operated by the gaging the needle thread and reciprocating in reciprocating shaft, substantially as specified. 20 a plane parallel to the line of feed and with JOHN SCHAACK. 10 a laterally reciprocating thread guide for Witnesses:

feeding the chain thread, substantially as F. V. BRIESEN,

specified. A. J ONGHMANS. 

